-Vainglorious boasting or bragging; pretentious, blustering talk.
-Arrogant boasting; pretentious blustering, ranting, or bragging.
Rodomontade stems from the name of a boastful king, Rodomonte, in the Italian epic poems Orlando innamorato (1483) and Orlando furioso (1516). It entered English in the early 1600s.
Used in a sentence:
"She knows what she's about; but he, poor fool, deludes himself with the notion that she'll make him a good wife, and because she has amused him with some rodomontade about despising rank and wealth in matters of love and marriage, he flatters himself that she's devotedly attached to him…”
~Anne Brontë, The Tenant of Wildfell Hall, 1848
From Grandiloquent Mercantile: If you’ve had about all the rodomontade you can take, here’s a shirt that says “talk to the hand” in grandiloquent style - Confer Thy Querulous Blatherings Upon the Palmar Fascia! https://amzn.to/2y2qSd4